Kaito and Gonta have little interaction, but they seem to be good friends. In Chapter 1, Kaito holds a meeting to discuss how to take Monokuma down, which Gonta attends. Later in this chapter, the two, along with Tenko Chabashira, work together to save Kaede Akamatsu from execution.
In Chapter 4, before Gonta's execution, Kaito refuses to believe that he is the culprit even after it is undoubtedly proven. He gets angry at Shuichi Saihara for discovering Gonta as the culprit, and doesn't talk to him after the trial is over and Gonta is executed.
Kaigonta is not very popular in the fandom, due to their limited amount of interactions and their inclusion in other popular ships such as Harukaito, Oumota, Saimota, Gontaguuji, and Ougoku. However, it still garnered a fair amount of supporters.
The ship sailed mainly as a result of Kaito's large amount of trust for Gonta, shown mostly in Chapter 4. They both try their best not to suspect any of their friends as murderers, including each other, which fueled this ship the most.
- Kaito's relationship with Gonta on Danganronpa Wiki
- Gonta's relationship with Kaito on Danganronpa Wiki
Saigokumota refers to the ship between the two and Shuichi Saihara.